Effect of Ce and La substitution on dielectric properties of bismuth titanate ceramics

Pavlovic, Nikolina; Kovaľ, Vladimír; Dusza, Ján; Srdić, Vladimir V.

doi:10.1016/j.ceramint.2010.09.005

Cited by 43 publications

(16 citation statements)

References 25 publications

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“…Crystal structure, physico-chemical, and functional properties of the solid solutions Bi 4-x Ln x Ti 3 O 12 (Ln = rare-earth element) were studied in a number of pa-pers [1,[3][4][5][6][7][8]. In [4] it was found that partial substitution of Bi by La in Bi 4 Ti 3 O 12 leads to decrease of orthorhombic distortion degree of Bi 4-x La x Ti 3 O 12 solid solutions at x ≤ 1.0, and at x > 1.0 they had tetragonal structure and were paraelectrics.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

2017

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The Bi 4-x Pr x Ti 3 O 12 (BPT) solid solutions (x = 0.05, 0.10, 0.15) with small praseodymium content were prepared by solid-state method. Thermal, electric, and dielectric properties of BPT were studied. It was revealed that BPT titanates crystalize in аn orthorhombic structure and exhibit p-type semiconductivity. Dielectric constant of BPT increased, Curie temperature (T C ), electrical conductivity and dielectric losses decreased, but lattice parameters and thermo-EMF coefficient remained practically unchanged with the increase of praseodymium content in layered Bi 4-x Pr x Ti 3 O 12 . It was determined that activation energy of direct current (DC) electrical conductivity and linear thermal expansion coefficient (LTEC) of BPT changes at ferroelectric (FE) → paraelectric (PE) phase transition. The activation energy and LTEC changed below and above T C from 1.08-1.56 eV to 0.45-0.86 eV and from (9.10-10.80)·10-6 K -1 to (13.12-14.61)·10-6 K -1, respectively. The AC electrical conductivity studies of BPT illustrated short-range order with ionic translations assisted by small-polaron hopping.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

2017

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“…volatilization and reduces grain growth due to which an improvement in dielectric and ferroelectric properties was observed [10]. However the formation of pyrochlore phase of BIT along with Aurivillius BIT phase lowers the Curie temperature [11].…”

Section: Introductionmentioning

confidence: 99%

Study of electrical and ferroelectric properties of Bi3.4Ce0.6Ti2.4Zr0.6O12 ceramics

Subohi

Kumar

Malik

et al. 2015

J Mater Sci: Mater Electron

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Polycrystalline samples of Bi 3.4 Ce 0.6 Ti 2.4 Zr 0.6-O 12 (CeZrBIT) ceramics were synthesized using solution combustion route. X-ray diffraction study indicates the presence of pyrochlore phase due to Ce doping and orthorhombic distortion in the bismuth titanate lattice due to Zr addition. Improvement in dielectric and ferroelectric properties of CeZrBIT was observed in comparison with undoped bismuth titanate. Electrical behaviour of the sample was analyzed using the complex impedance plots as a function of frequency at different temperatures. NonDebye type dielectric relaxation is shown by this lead free ceramic. The Nyquist plot demonstrates the negative temperature coefficient of resistance characteristic of CeZrBIT. Density of states at Fermi level and activation energy of the compound was also evaluated using the AC conductivity data.

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“…The temperature dependent dielectric study shows a diffuse phase transition with a linear decrease in transition temperature and dielectric constant with an increase in Ce 4+ content [6]. Effect of Ce and La substitution on the microstructure and dielectric proprieties of Bi 4 Ti 3 O 12 ceramics was investigated by Nikolina pavlovic et al [7]. Bi 4−x A x Ti 3 O 12 ceramics were prepared by modified sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural and Dielectric Properties of SrBi1.8Ce0.2Ta2O9

Afqir¹,

Tachafine²,

Fasquelle³

et al. 2016

OJPC

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This Ce-doped strontium bismuth tantalate SrBi 1.8 Ce 0.2 Ta 2 O 9 was prepared by solid-state reaction. X-ray diffraction was used to determine the crystal structure of the powders. The Raman spectrum of SrBi 1.8 Ce 0.2 Ta 2 O 9 sample was measured to confirm X-ray diffraction result. The microstructure of ceramic was observed by Scanning Electron Microscope (SEM). The Temperature dependence of the dielectric properties of ceramic was investigated from the room temperature to 400˚C.

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Effect of Ce and La substitution on dielectric properties of bismuth titanate ceramics

Cited by 43 publications

References 25 publications

Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

Study of electrical and ferroelectric properties of Bi3.4Ce0.6Ti2.4Zr0.6O12 ceramics

Synthesis, Structural and Dielectric Properties of SrBi<sub>1.8</sub>Ce<sub>0.2</sub>Ta<sub>2</sub>O<sub>9</sub>

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Effect of Ce and La substitution on dielectric properties of bismuth titanate ceramics

Cited by 43 publications

References 25 publications

Preparation and characterization of Bi4–xPrxTi3O12 solid solutions

Preparation and characterization of Bi4–xPrxTi3O12 solid solutions

Study of electrical and ferroelectric properties of Bi3.4Ce0.6Ti2.4Zr0.6O12 ceramics

Synthesis, Structural and Dielectric Properties of SrBi&lt;sub&gt;1.8&lt;/sub&gt;Ce&lt;sub&gt;0.2&lt;/sub&gt;Ta&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;9&lt;/sub&gt;

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Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

Preparation and characterization of Bi_4–xPr_xTi₃O₁₂ solid solutions

Synthesis, Structural and Dielectric Properties of SrBi<sub>1.8</sub>Ce<sub>0.2</sub>Ta<sub>2</sub>O<sub>9</sub>